Process of element transfer and reaction zone formation between the crust and the melt at Sor Rondane Mountains, East Antarctica

Abstract

The role of melt intrusion on the water supply to arc crust has been constrained from hydration reaction of the pargasite–phlogopite peridotite intruded by granitic dyke, Sør Rondane Mountains, East Antarctica. Thermodynamic and mass balance analysis indicates that hydration was rate-limited by the reaction within the host rock. Based on the compositional profile of the reaction zone, the reaction-diffusion model between the melt and crust is established and its effect on the water supply to the arc crust will be discussed.